Allegheny County police said two firefighters suffered chest pains while a third broke his ankle fighting the fire in Etna, which was reported shortly before 1:30 a.m. Monday. Their conditions weren't immediately available.

Police said Erb told them he was flicking lit cigarettes at a wall before lighting a blanket on fire and watching it burn. Police said Erb told them he left when the fire became too large for him to extinguish.

Police said Erb told them he didn't intend for the duplex to burn.A squatter who police describe as fascinated with fire has been jailed on charges he set fire to the vacant duplex where he had been living, sending three firefighters to the hospital.

Allegheny County police said two firefighters suffered chest pains while a third broke his ankle fighting the fire in Etna, which was reported shortly before 1:30 a.m. Monday. Their conditions weren't immediately available.

Police said Erb told them he was flicking lit cigarettes at a wall before lighting a blanket on fire and watching it burn. Police said Erb told them he left when the fire became too large for him to extinguish.

Ñ NOW TO ETNA..WHERE A 21-YEAR-OLD HOMELESS MAN IS BEHIND BARS.... AFTER CONFESSING TO SETTING A FIRE THAT INJURED SEVERAL FIREFIGHTERS. IT HAPPENED AT A DUPLEX ON VINE STREET THIS MORNING. ALAN MICHAEL ERB FACES SEVERAL CHARGES, INCLUDING ARSON. POLICE RECORDS SAY ERB USED LIGHTERS TO SET A BLANKET ON FIRE. WHEN THE FIRE GOT OUT OF CONTROL, ERB SAYS HE PANICKED AND LEFT THE HOME. A NEIGHBOR SAYS HE SPOKE WITH THE SUSPECT SECONDS AFTER THE FIRE. 3 TWO FIREFIGHTERS HAD HEAT RELATED INJURIES, ANOTHER